Intensity-dependent scattering rings in high order above-threshold ionization

Yang, B.; Schafer, Kenneth J.; Walker, Barry; Kulander, K. C.; Agostini, Pierre; DiMauro, L. F.

doi:10.1103/physrevlett.71.3770

Cited by 270 publications

(180 citation statements)

References 11 publications

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“…The intensity and species dependence of the production of high order photoelectrons was initially observed in the angular distributions of the high energy electrons produced in xenon and krypton [6]. Fully nonperturbative, time-dependent calculations using the single active electron (SAE) approximation [2,5,6] reproduce the intensity scaling of both the angular distributions and the strength of the plateau.…”

Section: (Received 30 September 1999)mentioning

confidence: 99%

Strong Species Dependence of High Order Photoelectron Production in Alkali Metal Atoms

Gaarde¹,

Schafer

Kulander

et al. 2000

Phys. Rev. Lett.

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Section: (Received 30 September 1999)mentioning

confidence: 99%

Strong Species Dependence of High Order Photoelectron Production in Alkali Metal Atoms

Gaarde¹,

Schafer

Kulander

et al. 2000

Phys. Rev. Lett.

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“…At the transition region when γ ≈ 1, both the multiphoton ionization and tunneling ionization contribute to the ATI. The photoelectrons induced directly by the laser fields have a classical cutoff energy 2U P , while the electrons produced by the rescattering can extend to the maximum energy up to 10U P [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…Extensive investigations have been performed both theoretically [11][12][13][14][15][16][17][18] and experimentally [7,12,14,[19][20][21][22][23][24][25][26][27][28][29][30][31] for a comprehensive understanding of the laser-induced atomic ATI for laser fields with wavelengths from visible lights (4×10 2 nm) to infrared radiations (1×10 5 nm). With the recent development of intense and ultrashort-wavelength free-electron lasers [32][33][34], the study of multiphoton * zyzhou@ku.edu † sichu@ku.edu processes in the high-frequency and strong-field regime becomes increasingly important [35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Precision calculation of above-threshold multiphoton ionization in intense short-wavelength laser fields: The momentum-space approach and time-dependent generalized pseudospectral method

Zhou

Chu

2011

Phys. Rev. A

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We present an approach in momentum (P) space for the accurate study of multiphoton and above-threshold ionization (ATI) dynamics of atomic systems driven by intense laser fields. In this approach, the electron wave function is calculated by solving the P-space time-dependent Schrödinger equation (TDSE) in a finite P-space volume under a simple zero asymptotic boundary condition. The P-space TDSE is propagated accurately and efficiently by means of the time-dependent generalized pseudospectral method with optimal momentum grid discretization and a split-operator time propagator in the energy representation. The differential ionization probabilities are calculated directly from the continuum-state wave function obtained by projecting the total electron wave function onto the continuum-state subspace using the projection operator constructed by the continuum eigenfunctions of the unperturbed Hamiltonian. As a case study, we apply this approach to the nonperturbative study of the multiphoton and ATI dynamics of a hydrogen atom exposed to intense shortwavelength laser fields. High-resolution photoelectron energy-angular distribution and ATI spectra have been obtained. We find that with the increase of the laser intensity, the photoelectron energy-angular distribution changes from circular to dumbbell shaped and is squeezed along the laser field direction. We also explore the change of the maximum photoelectron energy with laser intensity and strong-field atomic stabilization phenomenon in detail.

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“…A lot of attention has been devoted to these phenomena since their understanding via a three-step model involving simple classical trajectories in the strong laser field [2,3], succeeded to describe such processes (for example their high-energy cutoff [4,5]). More recently, the concept of strong field "quasi-free" motion of a high-energy rescattering electron was even used for laser-induced electron diffraction [6][7][8][9].…”

mentioning

confidence: 99%

Universal pulse dependence of the low-energy structure in strong-field ionization

et al. 2016

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We determine quantitatively the laser pulse duration dependence of the low-energy structure (LES) in strong-field atomic ionization and establish its universal character. The electron energy measurement is performed on krypton and argon by varying the duration of a 1.8 mu m midinfrared pulse from two to ten cycles. Comparing the experiment with analytical and numerical results, the soft-recollision mechanism leading to electron momentum bunching is confirmed as the origin of the LES. The universal behavior of the LES peak energy on pulse duration emerges from an analytical description as a product of two factors: one contains the influence of the laser parameters and the target, while the other one describes the pulse duration dependence in terms of optical cycles

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Intensity-dependent scattering rings in high order above-threshold ionization

Cited by 270 publications

References 11 publications

Strong Species Dependence of High Order Photoelectron Production in Alkali Metal Atoms

Strong Species Dependence of High Order Photoelectron Production in Alkali Metal Atoms

Precision calculation of above-threshold multiphoton ionization in intense short-wavelength laser fields: The momentum-space approach and time-dependent generalized pseudospectral method

Universal pulse dependence of the low-energy structure in strong-field ionization

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